Reminds me of the episode of "Primitive Technology" where he turns terrestrial snail shells into lime. https://www.youtube.com/watch?v=Ek3aeUhHaFY https://www.

Reminds me of the episode of "Primitive Technology" where he turns terrestrial snail shells into lime. https://www.youtube.com/watch?v=Ek3aeUhHaFY https://www.youtube.com/watch?v=Ek3aeUhHaFY